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Displaying records 651 to 660 of 774 records.
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651. Survey of FY 2001 Nanotechnology-Related Research at the National Institute of Standards and Technology.
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6864
Topic: Physics
Published: 1/1/2002
Authors: Chad R Snyder, J P. Looney, M P Casassa

652. Symmetry and Fourier analysis of the ab-initio-determined torsional variation of structural and Hessian-related quantities for application to vibration-torsion-rotation interactions in CH3OH
Topic: Physics
Published: 1/11/2010
Authors: Li-Hong Xu, Jon Torger Hougen, Jonathan M. Fisher, Ronald M. Lees
Abstract: The aim of the present paper is to investigate the use of quantum chemistry calculations to obtain the torsional dependence of various structural and vibrational-force-field-related quantities that could help in estimating the vibration-torsion-rotat ...

653. Sympathetic Electromagnetically-Induced-Transparency Laser Cooling of Motional Modes in an Ion Chain
Topic: Physics
Published: 4/12/2013
Authors: Yiheng Lin, John P Gaebler, Ting Rei Tan, Ryan Steven Bowler, John D. Jost, Dietrich G Leibfried, David J Wineland
Abstract: We use electromagnetically-induced transparency (EIT) laser cooling to cool motional modes of a linear ion chain. As a demonstration, we apply EIT cooling on ^u24^Mg^u+^ ions to cool the axial modes of a ^u9^Be^u+^-^u24^Mg^u+^ ion pair and a ^u9^Be^u ...

654. Synchronization between remote sites for the MINOS experiment
Topic: Physics
Published: 11/26/2012
Authors: Stefania Romisch, Steven R Jefferts, Victor Shufang Zhang, Thomas Edward Parker, Neil Ashby, P Adamson, G. Barr, A. Habig, J Meier, C. James, R. Nicol, R. Plunkett, C. Rosenfeld, Russell Bumgarner, M. Christensen, Jonathan Hirschauer, B. Fonville, Demetrios Matsakis, Ed Powers, J. Wright, Angela Mckinley
Abstract: In the context of time-of-flight measurements, the timing at the departure and arrival locations is obviously critical to the outcome of the experiment. In the case of neutrino time-of-flight experiments, the locations are many hundreds of kilometer ...

655. Synchronizing Computer Clocks Using Kalman Filters
Topic: Physics
Published: 7/31/2011
Author: Judah Levine
Abstract: I have used the Kalman Filter algorithm to improve the link between the Internet Time Servers operated by the National Institute of Standards and Technology (NIST) and the primary atomic clock ensemble in Boulder, which realizes UTC(NIST) and which i ...

656. Synchronizing Computer Clocks by the Use of Kalman Filters
Topic: Physics
Published: 11/14/2011
Author: Judah Levine
Abstract: The National Institute of Standards and Technology (NIST) currently operates 35 public network time servers that are located at many different sites in the United States. The servers provide time messages over the public Internet in a number of diffe ...

657. Synthesis of ultrastable femtosecond pulse trains from an optical reference oscillator
Topic: Physics
Published: 6/1/2003
Authors: A Bartels, T M Ramond, Scott A Diddams, Leo W. Hollberg

658. System-Level Integration of a Chip-Scale Atomic Clock: Microwave Oscillator and Physics Package
Topic: Physics
Published: 11/7/2006
Authors: Alan Brannon, Vladislav Gerginov, Svenja A Knappe, Z Popovic, John E Kitching
Abstract: We report on our progress in developing a prototype Chip-Scale Atomic Clock with the integration of the local oscillator and the physics package. A discussion of the design and results is given with a focus on frequency stability, size, and power con ...

659. Systematic error in the precision measurement of the mean wavelength of a nearly monochromatic neutron beam due to geometric errors
Topic: Physics
Published: 12/3/2009
Authors: Kevin J Coakley, Maynard S Dewey, Andrew T Yue, Alexander Laptev
Abstract: Many experiments at neutron scattering facilities require nearly monochromatic neutron beams. In such experiments, one must accurately measure the mean wavelength of the beam. We seek to reduce the systematic uncertainty of this measurement to approx ...

660. T-Shaped Quantum Wires in Magnetic Fields: Weakly Confined Magnetoexcitons Beyond the Diamagnetic Limit
Topic: Physics
Published: 3/1/2001
Authors: Garnett W Bryant, Y B Band
Abstract: Optical excitations of magnetoexcitons in T-shaped wires are calculated and compared with experiment. We find the single-particle states for electrons and holes confined to a wire in a magnetic field and use these states as a basis for calculations ...

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